In each of the two pictures below, a triangle is formed by a tangent to a circle, the radius though the point of contact and a line through the centre:

Draw these in your note book.

Part 1:

Steps of constructions:

1. Draw a circle of radius 2.5 cm with center O and take any point A on the circumference of circle.

2. Join OA, and draw AX ⊥ OA

3. Taking O as center draw an arc of 5 cm, that cuts AX at B, Join OB.

PART - 2

Steps of constructions:

1. Draw a line AB = 2 cm and Draw ∠BAX = 90°.

2. Taking B as center, draw an arc of radius 4 cm, which intersects AX at O, Join OB.

3. Taking O as center, and OA as radius, draw a circle and the required diagram is drawn.